14... e8g8  15. e1g1  15... c8e6 The last few moves from both sides were quite logical and now White needs to choose a plan. 16. c3e2 It's logical to exchange the powerful knight on d4. 16... d4e2 A bit passive. It would be better to take the knight on d5 or play a6-a5, fixing the queenside. In any case, it1s better to let White exchange knights on d4, so that Black has a passed pawn and the d-file cannot be exploited.